We sold our house in Northern California. We had some landscaping done in our backyard without a permit and disclosed this before the sale of the house. Both parties signed the disclosure forms and the sale went through. 3 days after the sale of the house, the slope behind the house slid down and took out the retaining wall that was built without a permit. This also affected the neighbor next door. The home builder hired a soil engineer who placed the blame on the retaining wall. My question is, since we disclosed this before the sale of the house, does this place the liability on the new home owner? We disclosed everything we knew about the house before the sale.